1. After speaking to the mage he tells you to talk to him in Varrock chaos temple.

2. Meet him there and he will eventually tell you he needs you to teleport from three different places to the rune essence mine to charge a scrying orb he gives you.

There are many places to teleport from. Here are four:

Aubury (the magic shop in Varrock)

Seridor (basement in Wizards Tower)

Wizard Cromperty (North east Ardougne)

Wizard Distentor (Magic Guild)

Just Teleport from these places 3 times. They have to be different. You don't need to mine any essence. After you have teleported 3 times the scrying orb should be a greenish color. just simply go back to the mage in Varrock, to receive your reward.

You must speak to the Zamorak mage in Varrock and ask him about the abyss before being allowed access to the abyss. Then go to Edgeville Zamorak Mage (level 7-9 Wilderness). Right-click on him and select Teleport on the menu.

When you arrive in the abyss you will be skulled and your prayer will drain to zero.